> Everyone gets vaccinated at the same time [...] region by region, so there are no populations which mix vaccinated and unvaccinated individuals
This is logistically impossible and completely unrealistic. If you can find any literature or any experts suggesting that this is feasible, please share.
> and the disease goes away
Even if we did manage do achieve what you suggested, the current vaccines do not guarantee sterilizing immunity. This means that even vaccinated individuals can be infected and transmit the virus, which still gives plenty of opportunity for the virus to mutate and eventually evolve to escape the immune response in the theoretical 100% vaccinated population.
> I can't see how making vaccinations non-compulsory will do anything good
There are many viral elimination strategies that complement vaccination - for example multi-drug treatment using widely available and existing medicines [1][2][3][4][5]. The key is that using a diverse set of strategies helps reduce the possibility and risk of vaccine resistance.
> I think you gave a very strong argument FOR compulsory vaccination.
I appreciate the spirited discussion but your comment does not seem particularly well informed - it completely disregards the concerns and arguments put forth by experts in the field, which I've outlined in my previous comments.
[1] Multifaceted highly targeted sequential multidrug treatment of early ambulatory high-risk SARS-CoV-2 infection (COVID-19)
https://scholarlycommons.henryford.com/cgi/viewcontent.cgi?a...
[2] Clinical outcomes after early ambulatory multidrug therapy for high-risk SARS-CoV-2 (COVID-19) infection
https://rcm.imrpress.com/EN/article/downloadArticleFile.do?a...
[3] Early multidrug treatment of SARS-CoV-2 infection (COVID-19) and reduced mortality among nursing home (or outpatient/ambulatory) residents
https://www.sciencedirect.com/science/article/abs/pii/S03069...
[4] Multidrug treatment for COVID-19
https://www.jstage.jst.go.jp/article/ddt/advpub/0/advpub_202...
[5] Ivermectin in combination with doxycycline for treating COVID-19 symptoms: a randomized trial
https://pubmed.ncbi.nlm.nih.gov/33983065/